/* eslint-disable no-console */
import '../assets/index.less';
import React from 'react';
import ReactDOM from 'react-dom';
import ListView from '../src';
import { StickyContainer, Sticky } from 'react-sticky';

const NUM_SECTIONS = 20;
const NUM_ROWS_PER_SECTION = 10;
let pageIndex = 0;

const dataBlobs = {};
let sectionIDs = [];
let rowIDs = [];
function genData(pIndex = 0) {
  for (let i = 0; i < NUM_SECTIONS; i++) {
    const ii = pIndex * NUM_SECTIONS + i;
    const sectionName = `Section ${ii}`;
    sectionIDs.push(sectionName);
    dataBlobs[sectionName] = sectionName;
    rowIDs[ii] = [];

    for (let jj = 0; jj < NUM_ROWS_PER_SECTION; jj++) {
      const rowName = `S${ii}, R${jj}`;
      rowIDs[ii].push(rowName);
      dataBlobs[rowName] = rowName;
    }
  }
  sectionIDs = [...sectionIDs];
  rowIDs = [...rowIDs];
}

class Demo extends React.Component {
  constructor(props) {
    super(props);
    const getSectionData = (dataBlob, sectionID) => dataBlob[sectionID];
    const getRowData = (dataBlob, sectionID, rowID) => dataBlob[rowID];

    const dataSource = new ListView.DataSource({
      getRowData,
      getSectionHeaderData: getSectionData,
      rowHasChanged: (row1, row2) => row1 !== row2,
      sectionHeaderHasChanged: (s1, s2) => s1 !== s2,
    });

    this.state = {
      dataSource,
      isLoading: true,
    };
  }

  componentDidMount() {
    // you can scroll to the specified position
    // setTimeout(() => this.lv.scrollTo(0, 120), 800);

    // simulate initial Ajax
    setTimeout(() => {
      genData();
      this.setState({
        dataSource: this.state.dataSource.cloneWithRowsAndSections(
          dataBlobs,
          sectionIDs,
          rowIDs,
        ),
        isLoading: false,
      });
    }, 600);
  }

  onEndReached = event => {
    console.log('fire onEndReached');
    // load new data
    // hasMore: from backend data, indicates whether it is the last page, here is false
    if (this.state.isLoading && !this.state.hasMore) {
      return;
    }
    console.log('reach end', event);
    this.setState({ isLoading: true });
    setTimeout(() => {
      genData(++pageIndex);
      this.setState({
        dataSource: this.state.dataSource.cloneWithRowsAndSections(
          dataBlobs,
          sectionIDs,
          rowIDs,
        ),
        isLoading: false,
      });
    }, 1000);
  };

  render() {
    return (
      <div>
        <ListView
          ref={el => (this.lv = el)}
          dataSource={this.state.dataSource}
          useBodyScroll
          renderSectionWrapper={sectionID => (
            <StickyContainer
              key={`s_${sectionID}_c`}
              className="sticky-container"
              style={{ zIndex: 4 }}
            />
          )}
          renderSectionHeader={sectionData => (
            <Sticky>
              {({ style }) => (
                <div
                  className="sticky"
                  style={{
                    ...style,
                    zIndex: 3,
                    padding: 16,
                    backgroundColor:
                      parseInt(sectionData.replace('Section ', ''), 10) % 2
                        ? '#5890ff'
                        : '#F8591A',
                    color: 'white',
                  }}
                >
                  {sectionData}
                </div>
              )}
            </Sticky>
          )}
          renderHeader={() => (
            <div style={{ height: 90, backgroundColor: '#bbb' }}>Header</div>
          )}
          renderFooter={() => (
            <div style={{ height: 90, backgroundColor: '#bbb' }}>Footer</div>
          )}
          renderRow={rowData => <div style={{ padding: 16 }}>{rowData}</div>}
          onEndReached={this.onEndReached}
          pageSize={10}
        />
        <div
          dangerouslySetInnerHTML={{
            __html: navigator.userAgent.match(/Android|iPhone|iPad|iPod/i)
              ? '<style>#qrcode, .highlight{ display: none }</style>'
              : '',
          }}
        />
      </div>
    );
  }
}

ReactDOM.render(<Demo />, document.getElementById('__react-content'));
